The evolution of the earnings gap within couples and the role of parenthood – a life-course perspective across three German cohorts
DOI:
https://doi.org/10.20377/jfr-1313Keywords:
couple earnings inequality, children, institutional changeAbstract
Objective: This article investigates for different cohorts how earnings inequalities evolve with the duration of cohabiting couples’ relationships and after childbirth.
Background: Germany has undergone a paradigm shift in its family policies and so presents ideal contextual conditions to examine whether institutional change is reflected in a decrease in within-couple inequality overall and across cohorts.
Method: Using a sample of 3161 couples from the Socio-Economic Panel (SOEP) from 1992 to 2023 we estimate growth curve models and fixed-effects panel regression. We differentiate three cohorts and given continued differences in gender norms analyze East and West Germany separately.
Results: Our findings suggest that children substantially increase earnings inequalities within couples, and that the gap does not return to pre-birth levels over time. We also find differences across cohorts: the impact of children on the partner earnings gap has notably reduced in West Germany over time with younger cohorts experiencing lower penalties than older ones, but the earnings gap still remains substantial. In East Germany we could not find a pattern of decreasing inequality across cohorts.
Conclusion: While there is some evidence that earnings inequalities between couples have reduced in our West German sample, during a time marked by paradigmatic change in German family policy, the earnings gap in couples persists and remains strongly related to the birth of children.
References
Andersen, S. H. (2018). Paternity leave and the motherhood penalty: New causal evidence. Journal of Marriage and Family, 80(5), 1125–1143. DOI: https://doi.org/10.1111/jomf.12507
Angelov, N., Johansson, P., & Lindahl, E. (2016). Parenthood and the gender gap in pay. Journal of Labor Economics, 34(3), 545–579. DOI: https://doi.org/10.1086/684851
Barth, D., Jessen, J., Spieß, C. K., & Wrohlich, K. (2020). Mothers in eastern and western Germany: Employment rates and attitudes are converging, full-time employment is not. DIW Weekly Report, 38, 403–410.
Bauernschuster, S., Hener, T., & Rainer, H. (2016). Children of a (policy) revolution: The introduction of universal child care and its effects on fertility. Journal of the European Economic Association, 14(4), 975–1005. DOI: https://doi.org/10.1111/jeea.12158
Baxter, J., Buchler, S., Perales, F., & Western, M. (2015). A life-changing event: First births and men's and women's attitudes to mothering and gender divisions of labor. Social Forces, 93(3), 989–1014. DOI: https://doi.org/10.1093/sf/sou103
Becker, G. S. (1991). Treatise on the family (enl. ed.). Harvard University Press. DOI: https://doi.org/10.4159/9780674020665
Becker, P. E., & Moen, P. (1999). Scaling back: Dual-earner couples' work-family strategies. Journal of Marriage and Family, 61(4), 995–1007. DOI: https://doi.org/10.2307/354019
Bianchi, S. M., Casper, L. M., & Peltola, P. K. (1999). A cross-national look at married women's earnings dependency. Gender Issues, 17(3), 3–33. DOI: https://doi.org/10.1007/s12147-999-0001-0
Bicchieri, C. (2017). Norms in the wild: How to diagnose, measure, and change social norms. Oxford University Press. DOI: https://doi.org/10.1093/acprof:oso/9780190622046.001.0001
Blum, S., & Erler, D. (2013). Germany. International Review of Leave Policies, 128–134.
Breen, R., & Cooke, L. P. (2005). The persistence of the gendered division of domestic labour. European Sociological Review, 21(1), 43–57. DOI: https://doi.org/10.1093/esr/jci003
Brehm, U., Huebner, M., & Schmitz, S. (2022). 15 Jahre Elterngeld: Erfolge, aber noch Handlungsbedarf: Ein Blick auf partnerschaftliche Arbeitsteilung und Karrieren. Bevölkerungsforschung Aktuell, 3–7.
Brücker, H., Kroh, M., Bartsch, S., Goebel, J., Kühne, S., Liebau, E., Trübswetter, P., Tucci, I., & Schupp, J. (2014). The new IAB-SOEP migration sample: An introduction into the methodology and the contents [SOEP Survey Paper]. DIW Berlin.
Brüderl, J., Kratz, F., & Bauer, G. (2019). Life course research with panel data: An analysis of the reproduction of social inequality. Advances in Life Course Research, 41, Article 100247. DOI: https://doi.org/10.1016/j.alcr.2018.09.003
Brüderl, J., & Ludwig, V. (2019). Applied panel data analysis using Stata. LMU München.
Bundesministerium für Familie, Senioren, Frauen und Jugend. (2021). Neunter Familienbericht: Eltern sein in Deutschland, Ansprüche, Anforderungen und Angebote bei wachsender Vielfalt.
Bundesregierung. (2006, November 7). Rede von Bundeskanzlerin Angela Merkel beim Arbeitgebertag 2006.
Bünning, M. (2015). What happens after the 'daddy months'? Fathers' involvement in paid work, childcare, and housework after taking parental leave in Germany. European Sociological Review, 31(6), 738–748. DOI: https://doi.org/10.1093/esr/jcv072
Daly, M., & Groes, F. (2017). Who takes the child to the doctor? Mom, pretty much all of the time. Applied Economics Letters, 24(18), 1267–1276. DOI: https://doi.org/10.1080/13504851.2016.1270410
Dieckhoff, M., Gash, V., Mertens, A., & Romeu Gordo, L. (2016). A stalled revolution? What can we learn from women's drop-out to part-time jobs: A comparative analysis of Germany and the UK. Research in Social Stratification and Mobility, 46, 129–140. DOI: https://doi.org/10.1016/j.rssm.2016.09.001
Dieckhoff, M., Gash, V., Mertens, A., & Romeu Gordo, L. (2019). Partnered women's contribution to household labor income: Persistent inequalities among couples and their determinants. Social Science Research, 86, Article 102348. DOI: https://doi.org/10.1016/j.ssresearch.2019.102348
Dotti Sani, G. M. (2015). Within-couple inequality in earnings and the relative motherhood penalty: A cross-national study of European countries. European Sociological Review, 31(6), 667–682. DOI: https://doi.org/10.1093/esr/jcv066
Ferragina, E. (2019). The political economy of family policy expansion: Fostering neoliberal capitalism or promoting gender equality supporting social reproduction? Review of International Political Economy, 26(6), 1238–1265. DOI: https://doi.org/10.1080/09692290.2019.1627568
Fleckenstein, T. (2011). The politics of ideas in welfare state transformation: Christian democracy and the reform of family policy in Germany. Social Politics, 18(4), 543–571. DOI: https://doi.org/10.1093/sp/jxr022
Fleckenstein, T., & Seeleib-Kaiser, M. (2011). Business, skills and the welfare state: The political economy of employment-oriented family policy in Britain and Germany. Journal of European Social Policy, 21(2), 136–149. DOI: https://doi.org/10.1177/0958928710380483
Gangl, M., & Ziefle, A. (2015). The making of a good woman: Extended parental leave entitlements and mothers' work commitment in Germany. American Journal of Sociology, 121(2), 511–563. DOI: https://doi.org/10.1086/682419
Gash, V., & Plagnol, A. (2020). The partner pay gap: Associations between spouses' relative earnings and life satisfaction among couples in the UK. Work, Employment and Society, 35(3), 566–583. DOI: https://doi.org/10.1177/0950017020946657
Goebel, J., Grabka, M. M., Liebig, S., Kroh, M., Richter, D., Schröder, C., & Schupp, J. (2019). The German Socio-Economic Panel (SOEP). Jahrbücher für Nationalökonomie und Statistik, 239(2), 345–360. DOI: https://doi.org/10.1515/jbnst-2018-0022
Goebel, J., Grabka, M. M., Liebig, S., Schröder, C., Zinn, S., Bartels, C., …, Süttmann, F. Deutsches Institut für Wirtschaftsforschung (DIW Berlin). (2023). Sozioökonomisches Panel, Daten der Jahre 1984–2021 (SOEP-Core, v38, EU Edition) [Data set]. DIW Berlin.
Gülzau, F. (2020). A paradigm shift in German family policy: Applying a topic model to map reform and public discourse, 1990–2016. European Policy Analysis, 6(1), 100–118. DOI: https://doi.org/10.1002/epa2.1072
Haupt, A., & Strauß, S. (2022). Long-term trends in the gender income gap within couples: West Germany, 1978–2011. Social Politics, 29(4), 980–1008. DOI: https://doi.org/10.1093/sp/jxac019
Kayed, T., Wieschke, J., & Kuger, S. (2022). Der Betreuungsbedarf bei U3- und U6-Kindern (DJI-Kinderbetreuungsreport 2022). Deutsches Jugendinstitut.
Killewald, A., & Gough, M. (2013). Does specialization explain marriage penalties and premiums? American Sociological Review, 78(3), 477–502. DOI: https://doi.org/10.1177/0003122413484151
Lott, Y., & Klenner, C. (2018). Are the ideal worker and ideal parent norms about to change? The acceptance of part-time and parental leave at German workplaces. Community, Work & Family, 21(5), 564–580. DOI: https://doi.org/10.1080/13668803.2018.1526775
Lundberg, S., & Pollak, R. A. (1996). Bargaining and distribution in marriage. Journal of Economic Perspectives, 10(4), 139–158. DOI: https://doi.org/10.1257/jep.10.4.139
Lundberg, S., & Rose, E. (2000). Parenthood and the earnings of married men and women. Labour Economics, 7(6), 689–710. DOI: https://doi.org/10.1016/S0927-5371(00)00020-8
Manser, M., & Brown, M. (1980). Marriage and household decision-making: A bargaining analysis. International Economic Review, 21(1), 31–44. DOI: https://doi.org/10.2307/2526238
Moberg, Y., & van der Vleuten, M. (2025). Splitting the penalty by taking turns? Same-sex mothers' earnings losses in Norway. Journal of Marriage and Family, 87(4), 1524-1548. DOI: https://doi.org/10.1111/jomf.13081
Musick, K., Bea, M. D., & Gonalons-Pons, P. (2020). His and her earnings following parenthood in the United States, Germany, and the United Kingdom. American Sociological Review, 85(4), 639–674. DOI: https://doi.org/10.1177/0003122420934430
Nitsche, N., Grunow, D., & Hudde, A. (2025). The stickiness of unequal housework sharing: Limited effects of couples' ideological pairings. Journal of Marriage and Family, 87(3): 1224-1248. DOI: https://doi.org/10.1111/jomf.13075
Nylin, A.-K., Musick, K., Billingsley, S., Duvander, A.-Z., & Evertsson, M. (2021). Trends in women's relative earnings within couples across the transition to parenthood in Sweden, 1987–2007. European Sociological Review, 37(3), 349–364. DOI: https://doi.org/10.1093/esr/jcaa056
Olivetti, C., & Petrongolo, B. (2019). The economic consequences of family policies: Lessons from a century of legislation in high-income countries. Journal of Economic Perspectives, 31(1), 205–230. DOI: https://doi.org/10.1257/jep.31.1.205
Ostner, I. (2010). Farewell to the family as we know it: Family policy change in Germany. German Policy Studies, 6(1), 211–244.
Raute, A. (2019). Can financial incentives reduce the baby gap? Evidence from a reform in maternity leave benefits. Journal of Public Economics, 169, 203–222. DOI: https://doi.org/10.1016/j.jpubeco.2018.07.010
Samtleben, C., Bringmann, J., Bünning, M., & Hipp, L. (2019). What helps and what hinders? Exploring the role of workplace characteristics for parental leave use and its career consequences. Social Sciences, 8(10), Article 270. DOI: https://doi.org/10.3390/socsci8100270
Schober, P., & Scott, J. (2012). Maternal employment and gender role attitudes: Dissonance among British men and women in the transition to parenthood. Work, Employment and Society, 26(3), 514–530. DOI: https://doi.org/10.1177/0950017012438577
Shafer, E. F. (2011). Wives' relative wages, husbands' paid work hours, and wives' labor-force exit. Journal of Marriage and Family, 73(2), 250–263. DOI: https://doi.org/10.1111/j.1741-3737.2010.00802.x
Shelton, B. A., & John, D. (1996). The division of household labor. Annual Review of Sociology, 22, 299–322. DOI: https://doi.org/10.1146/annurev.soc.22.1.299
Spiess, C. K., & Wrohlich, K. (2008). The parental leave benefit reform in Germany: Costs and labour market outcomes of moving towards the Nordic model. Population Research and Policy Review, 27(5), 575–591. DOI: https://doi.org/10.1007/s11113-008-9086-5
Stier, H., & Mandel, H. (2009). Inequality in the family: The institutional aspects of women's earning contribution. Social Science Research, 38(3), 594–608. DOI: https://doi.org/10.1016/j.ssresearch.2009.01.008
Trappe, H., Pollmann-Schult, M., & Schmitt, C. (2015). The rise and decline of the male breadwinner model: Institutional underpinnings and future expectations. European Sociological Review, 31(2), 230–242. DOI: https://doi.org/10.1093/esr/jcv015
West, C., & Zimmerman, D. H. (1987). Doing gender. Gender & Society, 1(2), 125–151. DOI: https://doi.org/10.1177/0891243287001002002
Zoch, G. (2021). Thirty years after the fall of the Berlin Wall—Do East and West Germans still differ in their attitudes to female employment and the division of housework? European Sociological Review, 37(5), 731–750. DOI: https://doi.org/10.1093/esr/jcab002
Zoch, G., & Heyne, S. (2023). The evolution of family policies and couples' housework division after childbirth in Germany, 1994–2019. Journal of Marriage and Family, 85(4), 1067–1086. DOI: https://doi.org/10.1111/jomf.12938
Zoch, G., & Schober, P. S. (2018). Public child-care expansion and changing gender ideologies of parents in Germany. Journal of Marriage and Family, 80(4), 1020–1039. DOI: https://doi.org/10.1111/jomf.12486

